Movable mount



A. N. PARUOLO MOVABLE MOUNT Sept. 22, 1964 Filed Feb. 5, 1962 Sept. 22,1964 N. PARUQLO MOVABLEII MGUNT 2 Sheets-Sheet 2 Filed Feb. 5, 1962.

lnited States Patent O 3,149,810 MVABLE MOUNT Anthony N. Pamolo,Norridge, Ill., assignor t Advertising Metal Display Co., Chicago, Ill.,a corporation of Tillinois Filed Feb. 5, 1962, Ser. No. 171,241 8Ciaims. (Cl. 248-124) This invention relates `to `a readily movable orport able mount, and more particularly relates to a readily movablemount for a window air conditioner. The mount is so constructed as 4tobe manually pulled or pushed from room to room with ya minimum of effortand is adjustable to conform with the sills of windows disposed atvarying distances from the floor level. This application is acontinuation-in-part of my co-pending application Serial No. 120,879,which was filed lune 20, 1961, now Patent Number 3,095,173.

Window air conditioners are normally adapted to cool certain limitedvolumes of air within a house. Usually a window air conditioner is ofsuch co-oling capacity that it is able to cool the air within the roomin which disposed to a desired temperature. Because of the limitedcooling capacity of window air conditioners, the cooling effect is notrealized in rooms located some distance from the conditioner.

Due to the weight and size of the normal window air conditioner, it isusually inserted by means of a permanent or semi-permanent installationin a window of a room in which cooling is particularly desired. Quiteoften air conditioners are permanently installed in the windows ofbedrooms whereby the temperatures within such room are maintainedcomfortably low during hot summer nights. However, during the day,little or no benefit from such a bedroom conditioner is obtained by ahousewife working in a distant kitchen or living room and, consequently,the conditioner may lbe `.allowed t-o remain non-operative until night.

It is desired that a window air conditioner be readily movable into andinstalled with ease in a minimum amount of time in any desired room ofthe house in which cooling eects are desired. Thus, a single airconditioner could eiiiciently cool a room, such as -a living room,during the daytime and 4be moved to a bedroom to cool the latter roomduring the night. It is also desired that the height of such airconditioner be readily adjustable in the vertical plane on a supportingmount, with a minimum of effort, in the normal course of use.

It is an object of lthis invention, therefore, to provide a novel,movable mount particularly `adapted lto assist in readily moving awindow air conditioner to a desired window location in a house oroffice, adjacent which cooling effects are desired.

It is another object of this invention to provide a movable mount for awindow air conditioner which is adapted to readily position a supported`air conditioner elative to a variety of Window openings normally foundin a home or other building structure.

It is a further object of this invention to provide a readily movablemount for an air conditioner which is so constructed as to assure readymovement of such air conditioner d-isposed thereon over plane surfaceswith substantially no danger of tipping the mount or the air conditionermounted thereon.

It is still another object of this invention to provide a readilymovable mount for lan air conditioner which is simple and lightweight instructure, and although adjustable, of sturdy construction so as to moveand suppont in safety window conditioners of substantial size andWeight.

It is yet another object of this invention to provide a novel mount foran air conditioner or the like, which 3,1itilll Patented Sept. 22, 1964Fice not only facilitates movement thereof, but which also funct-ions asan integral part of the installation, dispensing with additionalsupporting structure cost and installation.

It is another object of this invention to provide a mount constructionemploying novel locking sleeves which prevent extensible frame portionsfrom moving or vibrating relative to supporting frame portions, therebyassuring Ia sturdy assembly in all positions of use.

It is another object of this invention to provide a novel movable mount,particularly adapted for the support of window `air conditioners, whichmay readily tilt the conditioner so as Ito drain water collected in thesump thereof out the window or into a collecting receptacle prior tomoving the conditioner yand mount.

It is another object of this invention to provide a movable mount inwhich the carriage portion thereof supporting an air conditioner or thelike may be readily moved relative to an underlying supporting frameportion by a novel crank and pulley arrangement, as will hereinafter beexplained in greater detail.

The above and other objects of this invention will become more apparentfrom the following detailed description when read in the light of theaccompanying drawings and appended claims.

In one embodiment of this invention, a readily movable mount,particularly adapted for use with a window air conditioner, is provided.Such mount comprises a irst lower frame portion having spaced, verticaltubular members in which spaced rod or tube portions of an upper framemember and of lesser diametric dimensions are telescopically received.Superposed transverse channel members, one of which is connected tolower frame portions engaging the vertical tubular members of the lowerframe member, and the other of which is connected to the upper framemember, assist in maintaining the telescopically engaging elements ofthe frame assemblies in fixed spaced relationship.

Opposed parallel guide means are secured to upper, substantiallyhorizontal portions of the upper Vframe assembly and supportingly engageopposed carriage means, reciprocally movable in the horizontal plane, onwhich an air conditioner may be mounted. A rotatable threaded rod memberthreadedly engaging a tapped block mounted on -t-he lower transversechannel and connected at its upper end limit to the upper transversechannel comprises a regulating means whereby the position of the upperframe portion may be adjusted relative to the underlying frame portion.

A drive pulley 4spaced from the threaded rod is journaled in a bracketsecured to an undersurface portion of the upper transverse channel andis centrally connected to a crank projecting toward the front of themount. A second pulley is keyed to an upper portion of the threaded rodand interconnected with the rst pulley by means of a belt. Thus,cranking of the drive pulley readily enables the upper transversechannel and the mount upper frame portions movable `therewith to bereadily positioned relative to the mount lower frame portions.

A latch pivotally mounted on the guide means enables a fixed relativedisposition to be effected with the carriage means when the latter meansIare disposed at one end limit of -their reciprocal movement. When thecarriage means are at the opposed end limit of their reciprocalmovement, the carriage means and air conditioner mounted thereon may bepivoted through an angle suicient to discharge substantially all of thewater contained in the air conditioner sump, as will hereinafter be eX-plained ingreater detail.

In the normal course of use, the mount which is readily manually pulledor pushed with the assistance satanic of casters mounted on the lowerframe portion thereof is moved adjacent a window from which an airconditioner disposed on the mount is to project. The vertical positionof the air conditioner is regulated by the threaded rod after which theconditioner may move into the window opening by means of thehorizontally movable carriage members, as will hereinafter be explainedin greater detail.

For a more complete understanding of this invention, reference will nowbe made to the drawings wherein:

FIGURE l is a perspective view of a movable mount for an air conditioneror the like formed in accordance with the teaching of this invention;

FIG. 2 is a fragmentary perspective view of a novel pulley and crankarrangement employed in the movable mount of FIG. l;

FIG. 3 is a side elevational view of one embodiment of the movable mountof this invention illustrated with the carriage means thereof supportingan air conditioner in a tilted condition;

FIG. 4 is a fragmentary perspective view of one of the carriage membersemployed in the movable mount of this invention;

FIG. 5 is a fragmentary perspective view, partially broken away,illustrating the two positions of the latch means employed on one guidemember of the provided movable mount;

FIG. 6 is a perspective view of one of the guide members of the movablemount of this invention and engaged mount portions fragmentarily shown;and

FIG. 7 is a fragmentary elevational view, partly in section,illustrating a locking sleeve for assuring tight relative engagementbetween the telescoping `frame members of the provided mount.

Mount Frame Referring now more particularly to FIG. 1, a mount 10,particularly adapted to support a window air conditioner and assist inreadily moving the same over substantially level surfaces isillustrated. The mount is seen to comprise a lowermost tubular frameelement 12, which is substantially rectangular in configuration, onwhich four casters 14 are mounted at corner portions thereof. Thecasters are freely pivotal about their pintles and, accordingly, mount10 may be readily pushed or pulled in any direction on a plane surface.

Supported in substantially vertical planes on opposed portions of thelowermost tubular frame element 12 are opposed parallel, Vertical frameelements 16 which may be Welded at 17, or otherwise suitably axed, tothe underlying frame element 12. Bent tubular elements 1S reinforce theconnection between vertical elements 16 and frame element 12 and arewelded to element 12 at 20 and to frame members 16 at 22.

Each tubular element 16 telescopically receives one of opposed legportions 24 of an integral frame tubular member 26 in the manner mostclearly seen in FIGS. 1 and 3. Frame elements 18 are maintained inspaced relationship, by means of transverse channel 2S which may besecured at opposed end limits to frame elements 1S by screws 32 or otherequivalent securing means.

Because of manufacturing tolerances, slight relative movement isgenerally permissible between the lower vertical frame elements 16 ofthe mount 10 and the upper frame element 24, which are telescopicallyreceived therein. Since the diameters of the receiving openings in theelement 16 are larger than the external diameters of the elements 24,locking sleeves 11, illustrated in FIG. 7, are employed having femalethreads 13 formed thereon. It is the function of the threads 13 toengage male threads disposed on the upper end portions of the twovertical frame elements 16 of the mount lil. The locking sleeves 11 inthe course of threadedly engaging threads 1S urge tapered bushing 17,retained to the sleeve by at spring 19, into the interval between thetelescopically engaging elements. The bushing 17 is urged into placeafter an air conditioner or other item supported by the mount is at adesired elevation. The bushing 17 may be of nylon or other plastic whichis wear-resistant and will assist in eecting a tight, relativelyimmovable engagement between the two frame members 24 and 16.

As a result of the locking sleeve assembly illustrated in FIG. 7, theframe of the movable mount 1t) is substantially rattle-free, even in thecourse of movement. The sturdy 'assembly` in which the members 2d of theupper frame assembly are centrally disposed in the lower frame elements16 assure desired horizontal disposition of the upper frame componentsand the air conditioner or other item supported thereon.

Mount Guides Secured to horizontal arm portions 34 of the upper frametubular element 26, by nut and bolt assemblies 38 or other equivalentmeans, are opposed guides 36 (see FIGS. 3 and 6). A transverse tubularportion 4t), more clearly seen in FIGS. 1 and 6, interconnectshorizontalY portions 3d of each tubular frame member 26.

A transverse channel 42, most clearly seen in FIGS. l and 6, maintainsopposed parallel portions 3d of frame member 25 in parallel, spacedrelationship, and as will be noted from FIG. 6, may be secured to guides36 and frame tubular portions 34 by nut and bolt assemblies 44 or otherequivalent securing means. Thus, upper frame member 26, transversechannel d2 and the opposed parallel guides 36 will move as a unitrelative to the underlying frame elements 16 in which lower verticalportions 24 of the upper frame member 26 are telescopically received.

Each guide 36 comprises ak vertical rectangular surface 8,0 integrallyformed with a horizontal rectangular surface 82, as illustrated in FIG.6. An inwardly projecting, elongate lip S4 is integrally formed with theupper edge of each guide surface and is slotted at 86 to enable handleportion 98 of latch $8 pivotally mounted on surface S6 by means of rivet90 to project therethrough. An eye 92 punched from a latch portionengages one end of a coil spring 94, which is anchored to an eye 96punched from guide surface Sti at an opposed end limit, as is moreclearly seen in FIGS. 5 and 6. Spring 94 urges the latch 88 to moveabout pivot 90 until handle portion 9S engages an underlying portion oflip 84, as illustrated in FIG. 6.

Cemented or otherwise suitably affixed to opposed end portions of guides36 are plastic projections 102 and 104 of nylon or similar material forpurposes of effecting a low coeicient of friction with the engagedsurface portions of a carriage assembly slidably moving thereover.

Frame Regulating Means It will be noted from FIG. l that the transversechannels 28 and 42 are in superposed relationshipin the vertical plane.Therefore, threaded rod 46, most clearly seen in FIGS. l, 2 and 3, mayserve as a connecting means for regulating the interval between theupper portions of mount 1t) and the lower frame portions thereof.

Because of the telescopic engagement between frame leg portions 24 andtubular members 16, the upper portions of the mount It? are extensiblerelative to the lower frame portions thereof. Threaded rod 46 threadedlyengages tapped nut 4S xedly mounted on lower transverse member 28. Sincethe upper terminal limit of rod 46 is rotatable relative to transversechannel 42, but does not axially move relative thereto, rotatablemovement of rod 46 will raise or lower channel 42 (depending upon thedirection of rod rotation) and the other mount elements movabletherewith relative to transverse channel 28 and the lower frame elementsof the mount. It will be noted from FIG. 1 that the upper end limit ofrod 46 is of reduced cross-sectional dimensions and sesnaai cured tochannel 42 by means of cotter pin and washer assembly Si). The point ofengagement between the rod and channel 42 is spaced fiom the channelcenter and corresponds to the center of gravity of the supported airconditioner to be disposed thereon.

Keyed to an upper portion of rod 46 is a grooved pulley 52 which isspaced from pulley 54, see FIG. 2. The latter pulley is rotatablymounted on shaft 56 journaled in bearings 58. The bearings are mountedon opposed faces 60 of a bracket 62 which is secured to an undersurfaceportion of transverse channel 42 by means of screws 64, more clearlyseen in FIG. l. It will also be noted from this latter figure that thescrews 64 may longitudinally move along the channel in slots 66. Theadjustability of the interval between pulleys 54 and 52 enables desiredtension to be imparted to belt 68 interconnecting the same.

Shaft 56 of pulley 54 comprises a terminal arm portion of a hand crank70, more clearly seen in FIGS. 1 and 3. Rotary actuation of crank '7drotates pulley 54 and connected pulley 52, resulting in vertical axialmovement of rod 46. Crank 70 is downwardly inclined as a result of theangular disposition of the bracket faces 60 to the supporting channel42. Crank 70 may be readily actuated by a person standing erectly infront of the mount, and the carriage 36 and air conditioner supportedthereon raised or lowered, as desired. A shield 53 for the shaft andpulley assembly may be secured to the undersurface of the channel 42 byscrews 55 or equivalent means, see FIG. 2. The shield has a cut out 57formed therein for passage of crank arm 56.

Mount Carriage Members Reciprocally movable over the upper surfaceportions of the mount guides 36 are spaced members 120, more clearlyseen in FIGS. 1 and 4. The carriage members are maintained in xedspaced-apart relationship by means of connecting tubular member 122,which is secured at opposed end portions to channels 124 of eachcarriage member 120 by means of screws 126, see FIG. 4, or otherequivalent securing means.

Each channel 124 extends between terminal flange portions 128 and 129 ofeach carriage member. The flanges are integrally formed at right angleswith a vertical surface portion 135 having spaced apertures 132 formedtherein. The channels 124 are spot-welded or otherwise suitably affixedto carriage surfaces 136. The apertures enable a securing means totraverse surface 1311 in the course of engaging an air conditioner, suchas air conditioner 134 illustrated in FIG. 3. In the latter ligure,screws 136 are illustrated which traverse surface 130 of the illustratedcarriage member for purposes of engaging tapped apertures in the airconditioner.

Formed integrally with the upper edge end limit of surface 130 ofcarriage member 120 is an elongate lip 138 disposed at substantiallyright angles to both wall surface 13u and the end flanges. Spaced fromlip 138 on the end portion of the carriage wall surface 130 oppositelydisposed to handle 122 is an angle member 141B, which is spot-welded orotherwise suitably secured to surface 130 so that upper projecting edge142 is disposed substantially parallel to lip 13S defining a channel orpassageway 144 within which lip 34 of a guide 36 may reciprocally movein a manner apparent from FIG. 5.

It will be noted from the latter figure that the length of each carriagemember' 121i is substantially greater than the length of each guide 36of the movable mount. Consequently, each carriage 120 and attachedchannel 124 may reciprocally move over plastic projections 102 and 104of FIG. 6 relative to the supporting guide; the end limits of suchreciprocal movement are defined by engagement of end flanges 12S and 129of the carriage with the longitudinal end limits of the guide members.In the course of this movement the channels 124 serve as spacers 6maintaining a desired interval between the vertical walls of the guidesand adjacent carriage members.

As seen in FIG. 5, a normally horizontally disposed surface 143 isformed integrally with vertical wall surface 1311 of each carriagemember and serves to engage the bottom of an air conditioner or otherobject which is supported by the carriage member. As will also be seenfrom FIG. 5, a vertical projecting stop 150 is punched from central webportion 152 of the channel 124.

When the carriage members 121i are pulled by means of handle 122 untilange 129 engages a distal end limit of guide wall 80, flange 129 willfunction as a stop preventing further relative movement between theguides and carriage members. In the process of effecting the latterstopping action, the bottom end portion 154 of the pivotally mountedlatch 8S, which is offset in the manner illustrated in FIG. 5 so as notto engage opposed leg portions of channel 124, is pivoted by contactingthe arcuate edge surface of stop 150. The latch portion 154 rides overthe latter stop surface and reassumes a vertical position after passingthe stop so as to assume the position shown in FIG. f5.

In the position of FIG. 5, the carriage member 121B may only slightlymove relative to the supporting guide 36 a distance indicated by theinterval between stop ange 129 and the adjacent end of guide wall Sti,which interval is identified by reference member 158. The latterinterval is necessary to allow latch means 88 to be pivotally moved intothe dotted line position illustrated in FIG. 5 when it is desired topush carriage members 120 relative to guides 36 by means of handle 122.

In the relative disposition of FIG. 5, the carriage is in a lockedcondition which would normally be employed for moving an air conditioneron the mount within the room to a new location. However, upon arrivingat a window it would be desired to push the carriage and air conditionermounted thereon into the window opening. Thus, after the carriage hasbeen elevated to the proper height by means of crank '70, locking latchS8 is pivoted to the dotted line position of FIG. 5 enabling theVcarriage members to be pushed by handle 122 relative to the guides 36.

It is one of the functions of the channels 144 defined by portion 142 ofangles 140 and lip 138 of each guide 120 to prevent relative movement inthe vertical plane between the guides and the carriage members andthereby provide a more stable, rattle-free construction. It will benoted from FIG. 5 that in the locked position, lip 84 of each guide isdisposed between lip 138 and underlying portion 142 on the angle member141i of an adjacent carriage member.

It is seen from FIG. 3 that when the carriage assembly is pushed bymeans of handle 122 a certain longitudinal distance relative to thesupporting guides 36, lip 84 of each guide will no longer engage theangles and, as a result, the entire carriage assembly will be able topivot relative to the supporting guides in the manner illustrated inFIG. 3. Such pivoting action is desired prior to moving an airconditioner, after operation, from one location to another.

After a period of operation, a quantity of water, as large as twoquarts, may accumulate in a pan sump disposed in the air conditionerportion normally disposed in the window opening. In order to preventsplashing of this accumulated water on a floor surface in the course ofmoving the air conditioner, it is desired to tilt the air conditioner soas to drain the water in the sump through drain openings normallypresent in the conditioner face surface disposed outwardly in a windowopening. FIG. 3 illustrates a draining operation prior to moving theconditioner and mount to a new desired location. The water may bedrained out the window or into a receptacle.

It is noted from FIG. 3 that the difference in length between the guides36 and the carriages 121! enables the tilting action above described totake place. In addition, the .length difference facilitates engagementbetween the carriage members and the air conditioner inasmuch yas thereis no necessity for a securing means traversing the guide means. Eachopening i321 in the carriage means is directly accessible to thesecuring means by merely pulling the carriage means to the opposed endlimits of its permissible reciprocable movement.

in the position of FlG. 3 the carriage means are securely locked to theguide means since the inwardly projecting lips 8d of the guides 36define an interval within which the interposed carriage assembly issecurely retained. As indicated in FlG. 3, tilting will be effectedabout the axis defined by the edges of the guide means disposed furthestfrom handle 332 of the carriage assembly. Since in the extended carriageposition the center of gravity of the air conditioner and carriageassembly will be disposed on or adjacent to the pivot axis, theconditioner maybe tilted and returned to the horizontal position with aminimum of ei'l`ort. The maximum angle of carriage tilt will bedetermined by the height of the guide walls Sil, which defines thedistance through which the carriage will tilt before guide lip 84engages channel 124.

After the draining operation illustrated in FIG. 3, the carriageassembly and air conditioner mounted thereon may be pivoted back intothe horizontal position and pulled by means of handle i223 until thelocking position of FIG. 5 is reached. The tilting action of FIG. 3 maynot be effected until the locking lever is raised into the dotted lineposition of FIG. 5, which position is also illustrated in FIG. 3.Pivotal movement of the latch 8S enables underlying channel portion 24of the carriage assembly to upwardly move without engaging portion 154of the latch.

Normal M mmf Use in Installation In the normal course of use the mountand air conditioner assembly are moved to a desired Window location.Prior to moving the mount and `air conditioner assembly, the uppercarriage assembly in the locked position of FIG. 5 isA retracted to thelowermost position relative to lower frame elements i6 by hand crank7i). With the low center of gravity, the danger of tipping the mount andair conditioner assembly in the course of movement is minimized. Theframe sleeves l1 are loose during frame adjustment and tightened duringmount movement.

Upon arrival at a desired window opening the sleeves il are loosened,and the conditioner and engaged carriage assembly are raised by handcrank '70 until the bottom surfaces of the carriage members are one-halfinch above the sill of the window in which the conditioner will bedisposed. Handle 98 of latch 88V is pivoted upwardly into the dottedline position of FiG. 5, enabling the carriage members to move outwardlya desired distance beyond Vthe guide terminal edges into the windowopening. To assist in this carriage pushing action, a foot of the personinstalling the air conditioner may engage ribbed member composed ofrubber or other non-skid material disposed on the tubular portion offrame portion 12 disposed beneath handle 12?.. After extending outwardlya desired distance the air conditioner is lowered by rod do, throughactuation of crank 7i), so that the distal ends of the carriage membersi213 rest on the sill. The window sash is lowered and any expandableadapter eliminating exposed area between the air conditioner and windowopening is inserted in place. Normally the carriage members in theextended position will have the guide lips 85 `disposed in a portion ofthe channels 144 contributing to the stability of the installation.

After the air conditioner is locked in place the carriage assembly andconditioner may be moved upwardly a slight distance. This lattermovement is suiiicient to give the air conditioner a slight downwardtilt toward the room exterior facilitating drainage of the moistureremoved by the air conditioner to the room exterior.

It is seen, therefore, that a novel movable mount construction has beenprovided employing a carriage possessing a novel tilting action; thelatter tiltability enables an CII air conditioner to be drained prior tomoving over a door surface preventing splashing of water removed by theconditioner ontol the floor surface.

The provided movable mount also possesses a readily accessible handcrank enabling the carriage assembly and upper frame portions to bereadily positioned at a desired height relative to the supporting lowerframe portions.

Still further, it is apparent that the difference in length between thecarriage means and the guide means of the provided mount not onlyenables the tilting action to take place but, in addition, facilitatesengagement between the carriage means and the member mounted thereoninasmuch as the securing. means need not traverse the guide means.

Without further elaboration, the foregoing will soV fully explain thecharacter of my invention that others may, by applying currentknowledge, readily adapt the same for use under varying conditions ofservice, while retaining certain features which may properly be said toconstitute the essential items of novelty involved, which items areintended to be definedl and secured to me by the following claims.

I claim:

l. In a movable mount construction the combination comprising firstframe means, second frame means extensible relative to said first framemeans, guide means connected to spaced portions of said second framemeans, spaced carriage means hav'mg a greater length than said guidemeans reciprocally slidably movable over said guide means, meansinterconnecting said spaced carriage means,

means for maintaining said carriage means in substantially parallelrelationship with said guide means until said carriage means extendbeyond the terminal ends of said guide means a predetermined distancewhen said carriage i means are moved in one direction of theirreciprocal movement; said carriage means being tiltable relativeto saidguide means when no longer maintained in parallel relationship withsaidy guide means and when extended beyond the terminal ends of saidguide means said predetermined distance.

2. Amovable'mount construction comprising frame means, spaced parallelguide means connected to said frame means, spaced parallel carriagemeans of greater length than said guide Vmeans reciprocally slidablymovable over said guide means supporting said carriage means. eachslidably engaging pair of guide means and carriage means havingprojecting edge portions arranged in overlapping relationship with theedge of said carriage means disposed uppermost, and means secured to atleast one of said carriage means extending along a portion of the lengthof the carriage means to which secured and defining in part a passagewaywith the carriage means projecting edge portion for reception of saidguide means projecting edge whereby tilting of said carriage meansrelative to said guide means is prevented until the means secured tosaid carriage means defining in part a passageway for reception of saidguide means edge is completely extended beyond the terminal ends of saidguide means.

3. A movable mount construction comprising frame means, parallel guidemeans supported on said frame means adjustably positionable in thevertical plane, parallel carriage means of greater length than saidguide means supportably and slidably mounted on said guide means andadapted to reciprocally move thereover, means mounted on said carriagemeans maintaining said carriage means in the plane of said guide meansduring a portion of the reciprocal movement of said carriage meansrelative to said guide means; said carriage means being tiltable on thedistal ends of said guide means when said carriage means are at one endlimit of their reciprocal movement, and discrete means mounted on saidcarriage means and said guide means cooperating in the normal positionof assembly to prevent movement of said carriage means relative to saidguide means into the tiltable position of said carriage means in onedirection of reciprocal movement of said carriage means; at least one ofsaid discrete means being movable into a position allowing slidablemovement of said carriage means into the tiltable position.

4. In a movable mount the combination comprising frame means, parallelguide means maintained in fixed spaced relationship supportably mountedon said frame means, spaced parallel carriage means maintained in fixedspaced relationship for supporting an object mountable thereon, saidcarriage means being adapted to be reciprocally movable over said guidemeans; said carriage means being of greater length than said guidemeans, each of said guide means having a horizontal elongate surfacedisposed at substantially right angles to an elongate, upwardlyextending wall, a narrow elongate lip integrally formed with at least aportion of said upwardly extending wall superposed over said horizontalsurface in substantial parallel relation therewith; each of saidcarriage means having an elongate horizontal surface disposed atsubstantially right angles to an elongate upwardly extending wall,elongate spacer means of uniform width secured to said carriage meanswall and projecting therefrom in a direction opposite to that of saidcarriage means horizontal surface, said spacer means having a horizontalsurface interposed between the vertical walls of said carriage means andsaid guide means, said vertical walls being in parallel relationship inthe normal position of assembly; said spacer means and said carriagemeans horizontal surfaces being slidably movable over said guide meanshorizontal surfaces; said carriage means being pivotally movable aboutdistal edges of said guide means horizontal surfaces, the end limit ofsaid pivotal movement being defined by an engagement between said spacermeans and the elongate lips of said guide means.

5. The movable mount of claim 4 in which flange means are formedintegrally with the opposed ends of said carriage means vertical wallsand project in the direction of said guide means a suicient distance toengage the opposed ends of said guide means vertical walls therebydefining the end limits of the reciprocal movvement of said carriagemeans relative to said guide means.

6. The movable mount of claim 4 in combination with a latch pivotallymounted on one of said guide means vertical walls so as to pivotthereabout in one direction of rotation parallel to said walls, meansmounted on said one vertical Wall biasing said latch into a position inwhich the lower end portion thereof is disposed adjacent the spacermeans of said carriage means whereby said carriage means may not pivotabout the distal edges of said guide means horizontal surfaces untilsaid lower end portion is pivoted into a position spaced from saidspacer means.

7. The movable mount of claim 6 in which a stop projection is secured tothe upper surface of said spacer means preventing slidable movement ofsaid spacer means and carriage means past said latch in one direction ofsaid carriage means slidable movement.

8. In a movable mount construction the combination comprising spacedguide means having elongate, substantially vertically disposed wallportions connected at substantially right angles to elongate horizontalsurface portions projecting from said wall portions in the direction ofthe opposed guide means, an elongate narrow lip integrally formed withthe upper end limit of each of said guide means vertical wall portionsdisposed in parallel overlying relationship with said guide meanshorizontal surface portions, carriage means having horizontal andvertical wall portions corresponding to said guide means portionsmounted on said guide means horizontal portions for slidable reciprocalmovement relative thereto, handle means maintaining said carriage meansin ixed spaced relationship, each of said carriage means having a spacermeans secured to a vertical wall portion oppositely disposed to thehorizontal surface portions thereof and interposed between the verticalwall portions of said guide means and carriage means, said spacer meansbeing adapted to maintain said carriage means and said guide meansvertical wall portions in spaced relationship, said carriage means beingpivotally movable about the distal edges of Said guide means horizontalsurface portions oppositely disposed to said carriage handle means, theend limit of said pivotal movement being defined by an engagementbetween the guide means lips and said carriage spacer means; latch meanspivotally mounted on a vertical wall portion of said guide means biasedinto a iirst position preventing upward pivotal movement of saidcarriage means relative to said guide means and pivotally movable into asecond position permitting said upward pivotal movement, and stop meansformed in said spacer means preventing slidable movement of saidcarriage means past said latch means in the first position when saidcarriage means moves in one direction of its reciprocal movement.

References Cited in the tile of this patent UNITED STATES PATENTS1,230,819 Gall June 19, 1917 2,076,309 Whedon Apr. 6, 1937 2,614,610Camisa Oct. 21, 1952

1. IN A MOVABLE MOUNT CONSTRUCTION THE COMBINATION COMPRISING FIRSTFRAME MEANS, SECOND FRAME MEANS EXTENSIBLE RELATIVE TO SAID FIRST FRAMEMEANS, GUIDE MEANS CONNECTED TO SPACED PORTIONS OF SAID SECOND FRAMEMEANS, SPACED CARRIAGE MEANS HAVING A GREATER LENGTH THAN SAID GUIDEMEANS RECIPROCALLY SLIDABLY MOVABLE OVER SAID GUIDE MEANS, MEANSINTERCONNECTING SAID SPACED CARRIAGE MEANS, MEANS FOR MAINTAINING SAIDCARRIAGE MEANS IN SUBSTANTIALLY PARALLEL RELATIONSHIP WITH SAID GUIDEMEANS UNTIL SAID CARRIAGE MEANS EXTEND BEYOND THE TERMINAL ENDS OF SAIDGUIDE MEANS A PREDETERMINED DISTANCE WHEN SAID CARRIAGE MEANS ARE MOVEDIN ONE DIRECTION OF THEIR RECIPROCAL MOVEMENT; SAID CARRIAGE MEANS BEINGTILTABLE RELATIVE TO SAID GUIDE MEANS WHEN NO LONGER MAINTAINED INPARALLEL RELATIONSHIP WITH SAID GUIDE MEANS AND WHEN EXTENDED BEYOND THETERMINAL ENDS OF SAID GUIDE MEANS SAID PREDETERMINED DISTANCE.